Institution: | Assistant Professor, Program in Infectious Diseases and Clinical Microbiology, University of Texas Medical School at Houston, Houston, Texas 77025.;Research Associate, Department of Virology and Epidemiology, Baylor College of Medicine, Houston, Texas 77030.;Associate Professor, Departments of Microbiology, College of Liberal Arts, and Nutrition and Food Science, College of Agriculture, University of Arizona, Tucson, Arizona 85721. |